Hi there,
We did both breakfasts last August and loved them both.
Quality of food and service was the same.. breakfast was fresh, hot, plentiful... the servers attentive and efficient, the princesses were charming and really made my daughter feel special with a personal chat and a hug.
Personally - my honest opinion - telling my daughter we were having breakfast in the castle was a thrill.. it is so Disney - I mean when you think of Disney - this is what you picture.
But if unable to get the castle... then the storybook breakfast at EPCOT is an excellent alternative.
For me it is the castle (and cinderella) that makes it extra special.
I have some photos from both breakfasts on my website link below.
Good Luck with your reservations
>>^..^<<